Transforming Toxic Arsenic Sludge into a Valuable Commodity
A simple process extracts valuable pure arsenic metal from groundwater treatment waste.
Concentrated arsenic waste generated by groundwater treatment plants can now be easily transformed into metallic arsenic, offering the opportunity to create local, circular production of metallic arsenic.
Metallic arsenic is an element in demand for green-energy technologies, and this new method ensures clean drinking water.
According to Case van Genuchten from the Geological Survey of Denmark and Greenland, this latest work with Kaifeng Wang offers a way to produce metallic arsenic, labelled a critical raw material by the EU and US.
Nearly all groundwater contaminated with arsenic is due to naturally occurring deposits of arsenic-containing minerals dissolving into it.
This new method offers the opportunity to create local, circular production of metallic arsenic – an element now in demand for green-energy technologies – while ensuring clean drinking water.
Author's summary: Arsenic waste transformed into valuable metal for green technologies.
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